Dihydro pyridines

Thiazolo[3,2-a]pyridine, dihydro-nucleophilic reactions, 6, 701-702 synthesis, 6, 704... 

Azadienes undergo Diels-Alder reactions to form pyridine, dihydro- and tetrahydropyridine derivatives. N-Vinyl lactim ethers undergo Diels-Alder reactions with a limited set of dienophiles. " Thioketones react with dienes to give Diels-Alder cycloadducts. The carbonyl group of lactams have also been shown to be a dienophile. Certain heterocyclic aromatic rings (among them furans) can also behave as dienes in the Diels-Alder reaction. Some hetero dienes that give the reaction are -C=C-C=0, 0=C-C=0, and N=C-C=N. ... 

Phosphorane Phosphoramidate Phosphorothioate Phthalocyanine Porphyrin Pyran Dihydro Pyrazole Pyridine Dihydro Pyrimidine Dihydro Pyridinium Salt Pyridinium Ylide Pyrrole Pyrrolidine Pyruvic Amide Quinazoline Dihydro... 

Arsenin and Its Derivatives. Arsenin (arsabenzene) [289-31-6], C H As, the arsenic analogue of pyridine, can be prepared by the treatment of l,4-dihydro-l,l-dibutylstaimabenzene with arsenic trichloride (118) ... 

Reduction of isoindoles with dissolving metals or catalytically occurs in the pyrrole ring. Reduction of indolizine with hydrogen and a platinum catalyst gives an octahydro derivative. With a palladium catalyst in neutral solution, reduction occurs in the pyridine ring but in the presence of acid, reduction occurs in the five-membered ring (Scheme 38). Reductive metallation of 1,3-diphenylisobenzofuran results in stereoselective formation of the cw-1,3-dihydro derivative (Scheme 39) (80JOC3982). 

Oxazolo[4,5-6]pyridin-2(3 H)-one IR, 6, 653 <76HCA1593) Oxazolo[4,5-fi]pyridin-2(3H)-one, 3-(4-chlorophenyl)-3a,7a-dihydro-6-methyl-X-ray, 6, 647 <79CPB2261) Oxazolo[4,5-6]pyridin-2(3H)-one, 3-(4-chlorophenyl)-3a,7a-dihydro-7a-methyl-X-ray, 6, 647 <79CPB2261) 5H-Oxazolo[3,2-a]pyridin-3(2H)-one, 2-phenyl-6,7,8,8a-tetrahydro-X-ray, 6, 646 <77MI42902) Oxazolo[5,4-d]pyrimidin-4-amine, A7-methyl- H NMR, 6, 650 <70BCJ3909)... 

Benzofuro[2,3-c]pyridine, 3,4-dihydro-synthesis, 4, 978 Benzofuro[2,3-b]pyridines synthesis, 4, 977 Benzofuro[3,2-b]pyridines synthesis, 4, 981 Benzofuro[3,2-d]pyrimidines synthesis, 4, 987... 

Purine, 9- -D-ribofuranosyl-6-selenoxo- 1,6-dihydro-synthesis, 5, 597 Purine, 6-thiocyanato-acylation, 5, 559 Purine, 2-thioxo-synthesis, 5, 589 Purine, 8-thioxo-iodination, 5, 559 synthesis, 5, 577, 597 Purine, 2-thioxo-2,3-dihydro-synthesis, 5, 572 Purine, 6-thioxo-1,6-dihydro-acylation, 5, 559 dethiation, 5, 558 halogenation, 5, 559 hydrolysis, 5, 560 methylation, 5, 535 oxidation, 5, 560 synthesis, 5, 572, 596 Purine, 8-thioxo-7,8-dihydro-acylation, 5, 559 Purine, 2,6,8-trichloro-alkylation, 5, 530 amination, 5, 562 reactions, 5, 561, 562 with hydriodic acid, 5, 563 with pyridine, 5, 562 synthesis, 5, 598 Purine, 2,6,8-trichloro-7-methyl-synthesis, 5, 557 Purine, 8-trifluoromethyl-synthesis, 5, 574... 

Pyridine, 2-n-butyl-l-lithio-l,2-dihydro-as reducing agent, 2, 267 Pyridine, 4-carboxamido-1-oxide... 

Pyridine, 4-(chloromethyl)-l,4-dihydro-4ff-azepines from, 7, 524 ring expansion, 7, 543-544 Pyridine, 2-chloro-6-trichloromethyl-as bactericide, 2, 514 Pyridine, 2-cyano-ions... 

Pyridine, 6-cyano-l,2-dihydro-thermal dimerization, 2, 370 Pyridine, 2-cyanomethyl-tautomerism, 2, 159 Pyridine, 4-cyanomethyl-tautomerism, 2, 159 Pyridine, 2-cyano-2,3,4,5-tetrahydro-metallation, 2, 387 Pyridine, 2,5-diacetyl-ipso substitution, 2, 301 Pyridine, 3,5-diacetyl-l,4-dihydro-Hantzsch synthesis, 2, 482 Pyridine, 4-dialkylamino-as acylation catalysts, 2, 34 Pyridine, 2,2-dialkyl-l,2-dihydro-... 

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